#keyboard {
    display: none;
}

#keyboard .keyboard-container {
    position: fixed;
    bottom: 0;
    width: 100%;
    left: 0;
    background-color: #f2f2f2;
    box-shadow: 0 4px 10px #dedede;
    transition: display .3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    display: none;
    padding: 0.5em;
}
#keyboard .keyboard-container:after {
    content:"";
    display: block;
    height: 0;
    visibility: hidden;
    clear: both;
}
#keyboard .keyboard-container button {
    border:1px solid #535353;
    background-color: #ffffff;
    text-align: center;
    font-size: 12px;
    border-radius: 5px;
    float: left;
    margin: 4px;
    padding: 0.6em 1em;
}

#keyboard .keyboard-container button:active {
    border-color:#2396ef;
}